Question

Find the sum of all odd numbers Form 1 to 150​

Answer 1

Answer:

CRM

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Answer 2

Answer:

it is question of a.p.

Step-by-step explanation:

let the list of odd numbers be 1,3,5,..........149.

.°. a=1 , d=2

tn=1+(n-1)2

149=1+2n-2

149=-1+2n

150=2n

n=75.....(1)

Sn=75/2{2×1(75-1)2}

=75/2(2×74×2)

= 75×74

=5550